JP6646462B2 - Map display device and navigation device - Google Patents

Description

  The present invention relates to a technique for displaying traffic information on a map.

  Techniques for displaying traffic information on a map include FM multiplex broadcasting and reception from VICS (Vehicle Information Communication System), which transmits information via beacon transmitters installed on the roadside. Based on the traffic information, the mark indicating the type of traffic event (traffic stop, presence of a broken car, etc.) indicating the existence of the traffic information is displayed at the position on the map corresponding to the location of the traffic event represented by the traffic information There are known techniques (for example, Patent Documents 1 and 2).

  In addition, as a technique for displaying marks on a map, a technique for displaying marks representing features such as facilities on a map is used, when all marks are displayed, when marks are densely displayed on a map. A technique is known in which marks having close positions are grouped and only one mark in the group is displayed (for example, Patent Document 3).

  Further, as a technique for searching for a route to a destination in a navigation device, a technique for searching for a plurality of routes as a route to a destination (for example, Patent Documents 4 and 5), a route to a currently set destination, and the like. A technique for searching for a route different from the above (for example, Patent Documents 6 and 7) and a search for a route to a destination are performed on all roads in an area around the current position and the destination, and in other areas, 2. Description of the Related Art There are known techniques for searching only a main road such as an expressway as a search target (for example, Patent Documents 8 and 9).

JP 2007-078544 JP 2010-038713 A JP 2014-085142 JP JP 2014-163793 A JP 2007-093462 A JP 2003-130669 A JP 2011-145068 A JP-A-1996-128843 JP 2003-502680 A

  Based on the traffic information, the mark indicating the type of the traffic event indicating the presence of the traffic information is displayed at the position on the map corresponding to the point indicated by the traffic information. It is conceivable to apply a technique of displaying only one mark in a group.

  However, in this case, only one mark is displayed on the map for a plurality of pieces of traffic information where the point represented by the traffic information is close, so that a group of a plurality of groups of traffic information where the point represented by the traffic information is close to is displayed. If there are a plurality of important traffic information, the user cannot recognize the existence of other important traffic information except for one traffic information.

  Therefore, an object of the present invention is to present traffic information by a mark on a map so that a user can recognize the existence of all important traffic information.

  A map display device that presents the traffic information on a map, a display device, a map display unit that displays a map of a scale selected by a user on the display device, a type of an existing traffic event, and a type of the traffic event. Traffic information receiving means for receiving traffic information indicating a location, and importance setting means for setting the importance of each piece of traffic information received by the traffic information receiving means in accordance with a predetermined standard for determining the importance; As the traffic information mark representing the traffic information received by the traffic information receiving means, a mark representing the type of the traffic event represented by the traffic information is displayed on the display device corresponding to the location represented by the traffic information. Mark display means for displaying a mark at an upper position.

  Here, the mark display unit is configured to determine, for a plurality of pieces of traffic information in which the position on the map displayed on the display device corresponding to the present location being represented is close to or above a predetermined level, the plurality of pieces of traffic information Traffic information that is included in a group that does not include traffic information with a high degree of importance, only the traffic information mark that represents one of the traffic information included in the group is displayed. Is displayed at a position on the map corresponding to the location point represented by the one traffic information or at a position close to the position on the map, and is included in a group including a plurality of traffic information of high importance. For traffic information that is included in a group, traffic information marks that represent traffic information with a high importance included in the group are shifted little by little and overlapped, Position on the map corresponding to the presence point representing the traffic information, or to display a position close to the position on the map.

  Alternatively, the mark display unit may be configured such that, for a plurality of pieces of traffic information in which the position on the map displayed on the display device corresponding to the represented location is closer than a predetermined level, the plurality of pieces of traffic information are close to each other. Traffic information is grouped, and for a plurality of traffic information included in a group that does not include traffic information with a high importance, only a traffic information mark representing one of the traffic information included in the group is displayed. It is displayed at the position on the map corresponding to the location point represented by the one traffic information, or at a position close to the position on the map, and is included in a group including a plurality of traffic information of high importance. For a plurality of traffic information, traffic information marks included in the group and representing traffic information having a high degree of importance are sequentially and cyclically arranged one by one to correspond to the location represented by the traffic information. Position on the map, or displayed in a position close to the position on the map.

  Here, in such a map display device, in the mark display means, for a plurality of pieces of traffic information included in a group including only one piece of traffic information having a high importance, the importance level included in the group is included. May be configured to display only a traffic information mark representing traffic information of a large size at a position on the map corresponding to a location indicated by the traffic information or a position close to the position on the map. .

  In the above map display device, the predetermined criterion for determining the importance is a criterion for increasing the importance of the traffic information when the type of the traffic event represented by the traffic information is a predetermined type. It may be included.

  Here, using the above map display device, a current position calculating means for calculating a current position, a guidance route calculating means for searching for a route to a destination as a guidance route, and the current position and the guidance route, A navigation device may be configured together with guidance means for displaying on the map displayed on the display device.

  Further, a case where a navigation device is configured by using the above-described map display device together with a current position calculation unit that calculates a current position and a guidance unit that displays the current position on the map displayed on the display device The predetermined criterion for determining the importance is required until a distance or a distance from the current position to the represented location is within a predetermined distance, or until the represented location is reached from the current position. The importance of the traffic information for which the estimated value of the travel time is within the predetermined period may include a criterion for increasing the importance.

  Further, using the above map display device, a current position calculating means for calculating a current position, a guidance route calculating means for searching for a route to a destination as a guidance route, and displaying the current position and the guidance route. When the navigation device is configured together with the guidance means displayed on the map displayed on the device, the predetermined criterion for determining the importance is the importance of traffic information representing a point on the guidance route as a location. Or a standard for increasing the importance of traffic information representing a point on a road estimated to have a possibility of traveling from the current position to the destination as an existing point. May be included.

  According to the map display device and the navigation device as described above, since the location of the traffic event is close, if the traffic information mark is displayed as it is, the traffic information mark on the displayed map is overlapped or crowded. , Groups of objects having close proximity to each other are displayed, and a traffic information mark is displayed for the group. At this time, for a group that does not include traffic information with a high importance, only a traffic information mark representing one of the traffic information among the traffic information included in the group is displayed. For a group that includes multiple traffic information, the traffic information marks that represent the traffic information with the higher importance included in the group are displayed by being shifted slightly overlaid, or the traffic information with the higher importance included in the group is displayed. Are sequentially displayed one by one in a cyclic manner, thereby presenting to the user that there are a plurality of pieces of traffic information having a high degree of importance near the display point of the traffic information mark.

  Thus, the user can recognize the presence of all important traffic information by presenting the traffic information mark.

  As described above, according to the present invention, traffic information can be presented by a mark on a map so that the user can recognize the existence of all important traffic information.

It is a block diagram showing the composition of the navigation system concerning the embodiment of the present invention. It is a figure showing the example of a display of the navigation system concerning an embodiment of the present invention. It is a flow chart which shows traffic information mark display processing concerning an embodiment of the present invention. It is a figure showing the display form of the traffic information mark concerning an embodiment of the present invention. It is a figure showing the display form of the traffic information mark concerning an embodiment of the present invention. It is a figure showing the example of a display of the navigation system concerning an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described.
FIG. 1 shows a configuration of a navigation system according to the present embodiment.
As shown in the figure, the navigation system includes a navigation device 1, an FM broadcast receiver 2, a beacon receiver 3, an operation unit 4, a display device 5, a vehicle state sensor 6, and a GPS receiver 7. It is composed.

  Here, the vehicle state sensors 6 are various sensors for detecting various states of the vehicle, such as an azimuth sensor such as an angular acceleration sensor and a geomagnetic sensor, and a vehicle speed sensor such as a vehicle speed pulse sensor.

  The navigation device 1 includes a current state calculation unit 11, a route search unit 12, a map data storage unit 13, which is a storage device such as a DVD drive or an HDD storing map data representing a map, a memory 14, a control unit 15, a guide, and the like. An image generation unit 16 and a GUI control unit 17 that provides a user with a GUI using the operation unit 4 and the display device 5 are provided.

  However, the above navigation device 1 may be a CPU circuit having a general configuration including a microprocessor, a memory, and other peripheral devices such as a graphic processor and a geometric processor in terms of hardware. In this case, each unit of the navigation device 1 described above may be realized as a process realized by a microprocessor executing a prepared program. In this case, such a program may be provided to the navigation device 1 via a recording medium or an appropriate communication path.

  Here, the FM broadcast receiver 2 receives traffic information broadcast by FM multiplex broadcasting from an FM broadcast station. The beacon receiver 3 receives traffic information from the radio / optical beacon transmitter when traveling near the radio / optical beacon transmitter installed on the roadside.

  Here, the traffic information received from the FM broadcasting station or the radio / optical beacon transmitter includes information such as the coordinates of the location of the traffic event and the type of the traffic event (closed traffic, presence of a broken car, etc.). include.

  Then, the control unit 15 performs processing for storing the traffic information received by the FM broadcast receiver 2 and the beacon receiver 3 in the memory 14 and, among the traffic information stored in the memory 14, the same traffic information. The process of deleting the received traffic information from the memory 14 or the traffic information in which the elapsed time from the reception time to the present time in the traffic information stored in the memory 14 is equal to or longer than a predetermined period (for example, 30 minutes). A process for deleting information from the memory 14 is performed.

  Next, the current state calculation unit 11 of the navigation device 1 determines the current position estimated from the outputs of the vehicle state sensor 6 and the GPS receiver 7 based on the map data read from the map data storage unit 13 for the current position. After performing map matching processing with the map around the current position, the coordinates on the road link most likely as the current position and the direction most likely as the current traveling direction are used as the current position and current traveling direction, respectively. The processing to be determined and set in the memory 14 is repeatedly performed.

Further, the control unit 15 accepts a destination setting from the user via the operation unit 4 and the GUI control unit 17 in response to the user's destination setting request, and causes the route searching unit 12 to search for a route to the destination. . The route search unit 12 reads map data of a necessary geographical range from the map data storage unit 13, searches for a route from the current position to the destination, sets the searched route as a guidance route, and stores the route data of the guidance route. If the current position set in the memory 14 is near the destination, the control unit 15 determines that the destination has arrived, and determines the destination set in the memory 14 and the guidance route. The process of clearing is also performed.

Then, the guide image generating unit 16 generates a guide image, and displays the generated guide image on the display device 5 via the GUI control unit 17.
Here, as shown in FIG. 2, the guide image generated by the guide image generating unit 16 includes a current position mark 22 representing a current position on the map 21 on a reduced scale map 21 selectively set by the user. It is a representation. However, when a guide route is set, a guide route graphic 23 representing the guide route on the map 21 is also displayed in the guide image. When the destination is set and the destination is included in the display range of the map 21 of the guide image, a destination mark indicating the destination on the map 21 is also displayed in the guide image. It will be.

Now, in such a configuration, the control unit 15 executes a traffic information mark display process in order to display a traffic information mark representing traffic information on the guide image displayed on the display device 5.
FIG. 3 shows a procedure of the traffic information mark display processing.
As shown in the figure, in the traffic information mark display process, the control unit 15 displays the traffic information stored in the memory 14 on the map 21 of the displayed guide image corresponding to the location of the traffic event represented by the traffic information. Are grouped into groups of traffic information that are close to each other by a predetermined level or more (step 302).

Then, the following processing is performed for each group (steps 314, 316, 318).
That is, when the group includes only one traffic information (step 306), the traffic information mark indicating the type of the traffic event indicating the existence of the traffic information is displayed on the map 21 of the guide image. It is displayed at a position on the map 21 corresponding to the location of the traffic event represented by the traffic information (step 308).

  On the other hand, if there is a plurality of traffic information items included in the group (step 306), it is next checked whether or not the group includes a plurality of traffic information items whose traffic information values are significant (step 310).

  Here, the importance of traffic information is determined by applying any one of the following rules 1-4 alone or by combining an arbitrary number of arbitrary rules among the following rules 1-4. Apply and calculate.

  Rule 1: It is assumed that the type of traffic event represented by the traffic information is a type of traffic event predetermined as a traffic event that is important to the user, and the importance of the traffic information is large. For example, the importance of traffic information indicating a road closure is important because it is important for the user.

  Rule 2: A point where the distance from the current position to the point is within a predetermined distance or a predetermined distance, or a point where the estimated travel time required from the current position to the point is within the predetermined time is defined as a traffic event. It is assumed that the importance of the traffic information represented as the location is high. Here, the required travel time is obtained by causing the route searching unit 12 to search for a route from the current position to the location indicated by the traffic information, and calculating the required travel time of the route based on the searched route.

Rule 3: When a guidance route is set, the importance of traffic information indicating a point on the guidance route as a presence point and a presence point of a traffic event is high.
Rule 4: When a guidance route is set, traffic information indicating a point on the road that may travel from the current position to the destination as a point where a traffic event exists is of high importance. And

  Here, the point which may travel between the current position and the destination is determined by causing the route search unit 12 to search a plurality of routes (candidate routes) from the current position to the destination. The calculation may be performed by setting the upper point as a point on a road that may travel between the current position and the destination.

  Alternatively, for a point that may travel between the current position and the destination, the route searching unit 12 causes the route searching unit 12 to search for a route (alternative route) that is an alternative to the current guidance route, and the point on each searched route. May be calculated as a point on the road that may travel between the current position and the destination.

  Alternatively, for a point that may travel between the current position and the destination, the route searching unit 12 causes the route searching unit 12 to search for a route from the current position to the destination, and each of the search candidates in the search. The calculation may be performed by setting a point on a section that is a candidate for searching for a road as a point on a road that may travel from the current position to the destination.

  Returning to FIG. 3, if the group does not include a plurality of traffic information items having a high degree of importance of the traffic information (step 310), the display of the traffic information mark of the traffic information of the group is performed in the representative display mode (step 310). Step 312).

  Here, the traffic information mark display of the traffic information of the group of the representative display form is, for example, the traffic information mark of the traffic information indicating the presence of the closed traffic event in FIG. Assuming that the traffic information mark of the traffic information indicating the existence of the traffic event of the lane decrease shown in FIG.

  That is, when all of the traffic information in the group is traffic information having a low importance, that is, the traffic information in the group is displayed on the map 21 of a predetermined scale (smaller than the scale of the map 21 of the current guide image). In the case where all the marks are displayed, as shown in FIG. 4b11, as shown in FIG. 4b11, when a plurality of traffic information marks of less important traffic information are displayed at relatively close positions on the map 21, FIG. As shown, one of the arbitrary traffic information in the group is selected, and only the traffic information mark of the selected traffic information is displayed on the map 21 corresponding to the location indicated by the selected traffic information. , On the map 21 corresponding to the center of the distribution range of the location represented by the traffic information in the group. Here, the traffic information mark to be displayed is displayed with a decoration (“+” mark in the figure) indicating that there is traffic information for which the traffic information mark is not displayed.

  Further, when only one of the traffic information in the group is traffic information having a high degree of importance, that is, the group is displayed on the map 21 of a predetermined scale (smaller than the map 21 of the current guide image). When all the traffic information marks are displayed, one traffic information mark with a high importance and another traffic information with a low importance are placed at relatively close positions on the map 21 as shown in FIG. If the traffic information mark is to be displayed, as shown in FIG. 4b22, the traffic information having a high importance in the group is selected, and only the traffic information mark of the selected traffic information is selected. Is displayed at a position on the map 21 corresponding to the existence point represented by, or a position on the map 21 corresponding to the center of the distribution range of the existence point represented by the traffic information in the group. Here, the traffic information mark to be displayed is displayed with a decoration (“+” mark in the figure) indicating that there is a traffic information mark that is not displayed.

  Referring back to FIG. 3, when the group includes a plurality of pieces of traffic information having a high degree of importance for the traffic information (step 310), the display of the traffic information mark of the group's traffic information is performed in a partially concealed display form (step 310). Step 314).

Here, the traffic information mark display of the traffic information of the group in the partially concealed display mode is performed as follows.
That is, when all of the traffic information in the group is traffic information having a high importance, that is, the traffic information in the group is displayed on the map 21 of a predetermined scale (smaller than the map 21 of the current guide image). 4c11 when only a plurality of traffic information marks of a large importance degree are displayed at relatively close positions on the map 21 as shown in FIG. 4c11. As shown in, the traffic information marks of each traffic information in the group are slightly shifted and overlapped to partially overlap, and the traffic information mark corresponding to the traffic information mark with the highest importance placed at the front is partially overlapped. Is displayed at a position on the map 21 corresponding to the existence point represented by, or a position on the map 21 corresponding to the center of the distribution range of the existence point represented by the traffic information in the group. However, if a guidance route has been set and the traffic information in the group includes traffic information that indicates a point on the guidance route as an existing point, place the traffic information mark at the front. To In addition, each traffic information mark of the traffic information having a high importance is displayed with a shadow decoration.

  Further, when only some of the traffic information in the group is traffic information having a high degree of importance, that is, a map 21 of a predetermined scale (smaller than the map 21 of the current guide image) is displayed. When all the marks of the traffic information in the group are displayed, a plurality of traffic information marks of high importance and traffic information of other low importance are located at relatively close positions on the map 21 as shown in FIG. 4c22, only the traffic information marks of the traffic information having a large importance in the group are shifted little by little and overlapped as shown in FIG. Then, the position on the map 21 corresponding to the location indicated by the traffic information corresponding to the traffic information mark with the highest importance placed at the front, the traffic information within the group or the importance within the group is high. Transportation information Displays the position or the like on the map 21 corresponding to the center of the distribution range of existence points representing traffic information mark traffic information importance is not large is not displayed. However, if a guidance route is set and the traffic information in the group includes traffic information with a high importance that indicates a point on the guidance route as an existing point, the traffic information mark To be placed before.

  Here, each traffic information mark of the traffic information having a high importance is displayed with a shadow decoration. In addition, any one of the traffic information marks of the traffic information with a high degree of importance (the traffic information mark at the back in the figure) has a decoration (FIG. Then, a "+" mark) is added and displayed.

Referring back to FIG. 3, when the above processing of steps 310 to 314 is completed for each group (step 316), the processing returns to step 302.
The traffic information mark display processing performed by the control unit 15 has been described above.
By the way, in the above traffic information mark display processing, the traffic information mark display of the traffic information of the group in the partially concealed display form is changed to each traffic information mark having a high importance in the group as shown in FIGS. 4c12 and c22. Is displayed by partially overlapping, but the traffic information mark display of the traffic information of the group in the partially concealed display mode may be performed as follows.

  That is, when all the marks of the traffic information in the group are displayed on the map 21 of a predetermined scale (smaller than the scale of the map 21 of the current guide image), the map 21 is relatively close to the map 21 as shown in FIG. In the case where a plurality of traffic information marks of traffic information with a high importance is displayed at the position, as shown in FIG. 5a2, one traffic information mark of the traffic information with a high importance in the group is displayed. , May be displayed cyclically in a short time.

  In the traffic information mark display process described above, when a guidance route is set, the traffic information mark of the traffic information representing a point on the guidance route as an existing point is highlighted as shown in FIG. 5B. You may do so. Here, FIG. 5B shows an example in which the traffic information mark is highlighted by adding a frame as a decoration, but the traffic information mark is highlighted in another form such as highlighting of the traffic information mark. You may do so.

  Now, according to the traffic information mark display process as described above, as shown in FIG. 6A, the traffic information mark indicating the traffic event represented by the received traffic information is displayed on the map 21 of the guide image shown in FIG. It is displayed at a position corresponding to the location of the traffic event represented by the information.

  Further, at this time, if the traffic information mark is displayed as it is because the location points are close to each other, the traffic information in which the traffic information marks are overlapped or crowded is grouped with those where the location points are close to each other. The traffic information mark of the group is displayed in a display mode or a partially concealed display mode.

  Here, according to the partially concealed display mode, even when the position on the map 21 corresponding to the location of the traffic information with the high importance on the map 21 is close, all the importances with the high importance are displayed. A traffic information mark of the traffic information is at least partially displayed.

  Therefore, the user recognizes from the display of the traffic information mark in the partially concealed display form that there is a plurality of traffic information having a high importance level near the display point of the traffic information mark in the partially concealed display form. Can be. In addition, as shown in FIG. 6B, the scale of the map 21 of the guide image is changed based on the recognition, and the traffic information mark of the traffic information of which importance is partially hidden by the partially concealed display mode is displayed. Can be displayed on the guide image, and the traffic information having the high importance can be confirmed.

  The embodiment of the invention has been described.

  DESCRIPTION OF SYMBOLS 1 ... Navigation device, 2 ... FM broadcast receiver, 3 ... Beacon receiver, 4 ... Operation part, 5 ... Display device, 6 ... Vehicle state sensor, 7 ... GPS receiver, 11 ... Current state calculation part, 12 ... Route Search unit 13, 13 map data storage unit, 14 memory, 15 control unit, 16 guide image generation unit, 17 GUI control unit, 21 map, 22 current position mark, 23 guide route figure.

Claims (7)

A map display device for presenting traffic information on a map,
A display device;
Map display means for displaying a map of a scale selected by a user on the display device;
Traffic information receiving means for receiving traffic information indicating the type of an existing traffic event and the location of the traffic event,
Importance setting means for setting the importance of each traffic information received by the traffic information receiving means in accordance with a predetermined criterion for determining the importance;
As a traffic information mark representing the traffic information received by the traffic information receiving means, a mark representing the type of the traffic event represented by the traffic information is displayed on the display device corresponding to the location represented by the traffic information. Mark display means for displaying at a position on the map,
The mark display means,
The position on the map displayed on the display device corresponding to the presence point that is represented is a predetermined level or more, for a plurality of traffic information that are close to each other, group the plurality of traffic information,
For a plurality of traffic information included in a group that does not include traffic information with a high degree of importance, only the traffic information mark representing one of the traffic information included in the group is displayed. The position on the map corresponding to the presence point to be displayed, or displayed at a position close to the position on the map,
For multiple traffic information items included in a group that includes multiple high-priority traffic information items, the traffic information marks that represent the high-priority traffic information items included in the group are shifted little by little and overlapped. A map display device, wherein a map is displayed at a position on the map corresponding to an existing point represented by traffic information having a high degree of importance, or at a position close to the position on the map. The map display device according to claim 1, wherein
The mark display means may include, for a plurality of traffic information included in a group including only one important traffic information, only a traffic information mark representing the important traffic information included in the group. Is displayed at a position on the map corresponding to a location indicated by the traffic information or at a position close to the position on the map. The map display device according to claim 1 or 2,
The map display device, wherein the predetermined criterion for determining the importance includes a criterion for increasing the importance of the traffic information when the type of the traffic event represented by the traffic information is a predetermined type. . A navigation device provided with the map display device according to claim 1 or 2,
Current position calculating means for calculating the current position;
Guide means for displaying the current position on the map displayed on the display device,
The predetermined criterion for determining the degree of importance is a point within a predetermined distance or a distance from the current position to the represented location or the travel distance, or a required travel time until the represented location is reached from the current position. A map display device characterized by including a criterion that the importance of traffic information whose estimated value is within a predetermined period is large. A navigation device provided with the map display device according to claim 1 or 2,
Current position calculating means for calculating the current position;
Guidance route calculation means for searching for a route to the destination as a guidance route;
Guidance means for displaying the current position and the guidance route on the map displayed on the display device,
The map display device, wherein the predetermined criterion for determining the importance includes a criterion for increasing the importance of traffic information indicating a point on the guidance route as an existing point. A navigation device provided with the map display device according to claim 1 or 2,
Current position calculating means for calculating the current position;
Guidance route calculation means for searching for a route to the destination as a guidance route;
Guidance means for displaying the current position and the guidance route on the map displayed on the display device,
The predetermined criterion for determining the importance is a criterion for increasing the importance of traffic information representing a point on a road estimated to possibly travel from the current position to the destination as an existing point. A map display device comprising: A navigation device comprising the map display device according to claim 1, 2, or 3,
Current position calculating means for calculating the current position;
Guidance route calculation means for searching for a route to the destination as a guidance route;
A navigation device for displaying the current position and the guidance route on the map displayed on the display device .